1.Built-in single chip computer control circuit and tracked by the high-speed cloud   camera ball.
    2.It use the long life server and no noise of touch swith.
    3.Built-in high fidelity capaaitor sound head, which makes sound reduction,   high resolution and low noise.
    4.Effective scream suppression, super pick up sound effect.
    5.The annular red indicator lamp can show the working state on   microphone.
    6.The chairman unit can turn down the delegate for anytime by priority button.
    7.The speaking model:FIFO/LIMIT/FREE/CHAIRMAN.